diff --git a/boot_rom.lk b/boot_rom.lk
deleted file mode 100644
index 3506cc0..0000000
--- a/boot_rom.lk
+++ /dev/null
@@ -1,11 +0,0 @@
--mjwx
--i boot_rom.ihx
--b _CODE = 0x0200
--b _DATA = 0x8000
--k /usr/bin/../share/sdcc/lib/z80
--k /usr/share/sdcc/lib/z80
--l z80
-/usr/bin/../share/sdcc/lib/z80/crt0.rel
-boot_rom.rel
-
--e
diff --git a/boot_rom.lst b/boot_rom.lst
deleted file mode 100644
index 4463b2c..0000000
--- a/boot_rom.lst
+++ /dev/null
@@ -1,328 +0,0 @@
-                              1 ;--------------------------------------------------------
-                              2 ; File Created by SDCC : free open source ANSI-C Compiler
-                              3 ; Version 3.8.0 #10562 (Linux)
-                              4 ;--------------------------------------------------------
-                              5 	.module boot_rom
-                              6 	.optsdcc -mz80
-                              7 	
-                              8 ;--------------------------------------------------------
-                              9 ; Public variables in this module
-                             10 ;--------------------------------------------------------
-                             11 	.globl _main
-                             12 	.globl _draw_line
-                             13 	.globl _put_pixel
-                             14 	.globl _abs
-                             15 ;--------------------------------------------------------
-                             16 ; special function registers
-                             17 ;--------------------------------------------------------
-                             18 ;--------------------------------------------------------
-                             19 ; ram data
-                             20 ;--------------------------------------------------------
-                             21 	.area _DATA
-                             22 ;--------------------------------------------------------
-                             23 ; ram data
-                             24 ;--------------------------------------------------------
-                             25 	.area _INITIALIZED
-                             26 ;--------------------------------------------------------
-                             27 ; absolute external ram data
-                             28 ;--------------------------------------------------------
-                             29 	.area _DABS (ABS)
-                             30 ;--------------------------------------------------------
-                             31 ; global & static initialisations
-                             32 ;--------------------------------------------------------
-                             33 	.area _HOME
-                             34 	.area _GSINIT
-                             35 	.area _GSFINAL
-                             36 	.area _GSINIT
-                             37 ;--------------------------------------------------------
-                             38 ; Home
-                             39 ;--------------------------------------------------------
-                             40 	.area _HOME
-                             41 	.area _HOME
-                             42 ;--------------------------------------------------------
-                             43 ; code
-                             44 ;--------------------------------------------------------
-                             45 	.area _CODE
-                             46 ;boot_rom.c:11: void put_pixel(unsigned char x, unsigned char y, unsigned char color) {
-                             47 ;	---------------------------------
-                             48 ; Function put_pixel
-                             49 ; ---------------------------------
-   0000                      50 _put_pixel::
-   0000 DD E5         [15]   51 	push	ix
-   0002 DD 21 00 00   [14]   52 	ld	ix,#0
-   0006 DD 39         [15]   53 	add	ix,sp
-                             54 ;boot_rom.c:12: *((unsigned char*)(160*y+x)) = color;
-   0008 DD 4E 05      [19]   55 	ld	c, 5 (ix)
-   000B 06 00         [ 7]   56 	ld	b, #0x00
-   000D 69            [ 4]   57 	ld	l, c
-   000E 60            [ 4]   58 	ld	h, b
-   000F 29            [11]   59 	add	hl, hl
-   0010 29            [11]   60 	add	hl, hl
-   0011 09            [11]   61 	add	hl, bc
-   0012 29            [11]   62 	add	hl, hl
-   0013 29            [11]   63 	add	hl, hl
-   0014 29            [11]   64 	add	hl, hl
-   0015 29            [11]   65 	add	hl, hl
-   0016 29            [11]   66 	add	hl, hl
-   0017 DD 4E 04      [19]   67 	ld	c, 4 (ix)
-   001A 06 00         [ 7]   68 	ld	b, #0x00
-   001C 09            [11]   69 	add	hl, bc
-   001D DD 7E 06      [19]   70 	ld	a, 6 (ix)
-   0020 77            [ 7]   71 	ld	(hl), a
-                             72 ;boot_rom.c:13: }
-   0021 DD E1         [14]   73 	pop	ix
-   0023 C9            [10]   74 	ret
-                             75 ;boot_rom.c:16: void draw_line(unsigned char x, unsigned char y, 
-                             76 ;	---------------------------------
-                             77 ; Function draw_line
-                             78 ; ---------------------------------
-   0024                      79 _draw_line::
-   0024 DD E5         [15]   80 	push	ix
-   0026 DD 21 00 00   [14]   81 	ld	ix,#0
-   002A DD 39         [15]   82 	add	ix,sp
-   002C 21 F8 FF      [10]   83 	ld	hl, #-8
-   002F 39            [11]   84 	add	hl, sp
-   0030 F9            [ 6]   85 	ld	sp, hl
-                             86 ;boot_rom.c:20: char dx1 = (x<x2)?1:-1;
-   0031 DD 7E 04      [19]   87 	ld	a, 4 (ix)
-   0034 DD 96 06      [19]   88 	sub	a, 6 (ix)
-   0037 30 05         [12]   89 	jr	NC,00112$
-   0039 01 01 00      [10]   90 	ld	bc, #0x0001
-   003C 18 03         [12]   91 	jr	00113$
-   003E                      92 00112$:
-   003E 01 FF FF      [10]   93 	ld	bc, #0xffff
-   0041                      94 00113$:
-   0041 DD 71 FB      [19]   95 	ld	-5 (ix), c
-                             96 ;boot_rom.c:21: char dy1 = (y<y2)?1:-1;
-   0044 DD 7E 05      [19]   97 	ld	a, 5 (ix)
-   0047 DD 96 07      [19]   98 	sub	a, 7 (ix)
-   004A 30 05         [12]   99 	jr	NC,00114$
-   004C 01 01 00      [10]  100 	ld	bc, #0x0001
-   004F 18 03         [12]  101 	jr	00115$
-   0051                     102 00114$:
-   0051 01 FF FF      [10]  103 	ld	bc, #0xffff
-   0054                     104 00115$:
-   0054 DD 71 FA      [19]  105 	ld	-6 (ix), c
-                            106 ;boot_rom.c:24: longest = abs(x2 - x);
-   0057 DD 4E 06      [19]  107 	ld	c, 6 (ix)
-   005A 06 00         [ 7]  108 	ld	b, #0x00
-   005C DD 5E 04      [19]  109 	ld	e, 4 (ix)
-   005F 16 00         [ 7]  110 	ld	d, #0x00
-   0061 79            [ 4]  111 	ld	a, c
-   0062 93            [ 4]  112 	sub	a, e
-   0063 4F            [ 4]  113 	ld	c, a
-   0064 78            [ 4]  114 	ld	a, b
-   0065 9A            [ 4]  115 	sbc	a, d
-   0066 47            [ 4]  116 	ld	b, a
-   0067 C5            [11]  117 	push	bc
-   0068 CDr00r00      [17]  118 	call	_abs
-   006B F1            [10]  119 	pop	af
-   006C DD 75 FF      [19]  120 	ld	-1 (ix), l
-                            121 ;boot_rom.c:25: shortest = abs(y2 - y);
-   006F DD 6E 07      [19]  122 	ld	l, 7 (ix)
-   0072 26 00         [ 7]  123 	ld	h, #0x00
-   0074 DD 5E 05      [19]  124 	ld	e, 5 (ix)
-   0077 16 00         [ 7]  125 	ld	d, #0x00
-   0079 BF            [ 4]  126 	cp	a, a
-   007A ED 52         [15]  127 	sbc	hl, de
-   007C E5            [11]  128 	push	hl
-   007D E5            [11]  129 	push	hl
-   007E CDr00r00      [17]  130 	call	_abs
-   0081 F1            [10]  131 	pop	af
-   0082 5D            [ 4]  132 	ld	e, l
-   0083 E1            [10]  133 	pop	hl
-   0084 DD 73 FE      [19]  134 	ld	-2 (ix), e
-                            135 ;boot_rom.c:26: if(longest<shortest) {
-   0087 DD 7E FF      [19]  136 	ld	a, -1 (ix)
-   008A DD 96 FE      [19]  137 	sub	a, -2 (ix)
-   008D 30 1A         [12]  138 	jr	NC,00102$
-                            139 ;boot_rom.c:27: longest = abs(y2 - y);
-   008F E5            [11]  140 	push	hl
-   0090 CDr00r00      [17]  141 	call	_abs
-   0093 F1            [10]  142 	pop	af
-   0094 DD 75 FF      [19]  143 	ld	-1 (ix), l
-                            144 ;boot_rom.c:28: shortest = abs(x2 - x);
-   0097 C5            [11]  145 	push	bc
-   0098 CDr00r00      [17]  146 	call	_abs
-   009B F1            [10]  147 	pop	af
-   009C DD 75 FE      [19]  148 	ld	-2 (ix), l
-                            149 ;boot_rom.c:29: dx2 = 0;            
-   009F 0E 00         [ 7]  150 	ld	c, #0x00
-                            151 ;boot_rom.c:30: dy2 = dy1;
-   00A1 DD 7E FA      [19]  152 	ld	a, -6 (ix)
-   00A4 DD 77 FC      [19]  153 	ld	-4 (ix), a
-   00A7 18 07         [12]  154 	jr	00103$
-   00A9                     155 00102$:
-                            156 ;boot_rom.c:32: dx2 = dx1;
-   00A9 DD 4E FB      [19]  157 	ld	c, -5 (ix)
-                            158 ;boot_rom.c:33: dy2 = 0;
-   00AC DD 36 FC 00   [19]  159 	ld	-4 (ix), #0x00
-   00B0                     160 00103$:
-                            161 ;boot_rom.c:36: numerator = longest/2;
-   00B0 DD 5E FF      [19]  162 	ld	e, -1 (ix)
-   00B3 16 00         [ 7]  163 	ld	d, #0x00
-   00B5 6B            [ 4]  164 	ld	l, e
-   00B6 62            [ 4]  165 	ld	h, d
-   00B7 CB 7A         [ 8]  166 	bit	7, d
-   00B9 28 03         [12]  167 	jr	Z,00116$
-   00BB 6B            [ 4]  168 	ld	l, e
-   00BC 62            [ 4]  169 	ld	h, d
-   00BD 23            [ 6]  170 	inc	hl
-   00BE                     171 00116$:
-   00BE CB 2C         [ 8]  172 	sra	h
-   00C0 CB 1D         [ 8]  173 	rr	l
-   00C2 45            [ 4]  174 	ld	b, l
-                            175 ;boot_rom.c:37: for(i=0;i<=longest;i++) {
-   00C3 DD 36 FD 00   [19]  176 	ld	-3 (ix), #0x00
-   00C7                     177 00108$:
-                            178 ;boot_rom.c:38: put_pixel(x,y,color) ;
-   00C7 C5            [11]  179 	push	bc
-   00C8 D5            [11]  180 	push	de
-   00C9 DD 66 08      [19]  181 	ld	h, 8 (ix)
-   00CC DD 6E 05      [19]  182 	ld	l, 5 (ix)
-   00CF E5            [11]  183 	push	hl
-   00D0 DD 7E 04      [19]  184 	ld	a, 4 (ix)
-   00D3 F5            [11]  185 	push	af
-   00D4 33            [ 6]  186 	inc	sp
-   00D5 CDr00r00      [17]  187 	call	_put_pixel
-   00D8 F1            [10]  188 	pop	af
-   00D9 33            [ 6]  189 	inc	sp
-   00DA D1            [10]  190 	pop	de
-   00DB C1            [10]  191 	pop	bc
-                            192 ;boot_rom.c:39: if(numerator >= longest-shortest) {
-   00DC DD 6E FE      [19]  193 	ld	l, -2 (ix)
-   00DF 26 00         [ 7]  194 	ld	h, #0x00
-   00E1 7B            [ 4]  195 	ld	a, e
-   00E2 95            [ 4]  196 	sub	a, l
-   00E3 6F            [ 4]  197 	ld	l, a
-   00E4 7A            [ 4]  198 	ld	a, d
-   00E5 9C            [ 4]  199 	sbc	a, h
-   00E6 67            [ 4]  200 	ld	h, a
-   00E7 DD 70 F8      [19]  201 	ld	-8 (ix), b
-   00EA DD 36 F9 00   [19]  202 	ld	-7 (ix), #0x00
-                            203 ;boot_rom.c:40: numerator += shortest ;
-   00EE 78            [ 4]  204 	ld	a, b
-   00EF DD 86 FE      [19]  205 	add	a, -2 (ix)
-   00F2 47            [ 4]  206 	ld	b, a
-                            207 ;boot_rom.c:39: if(numerator >= longest-shortest) {
-   00F3 DD 7E F8      [19]  208 	ld	a, -8 (ix)
-   00F6 95            [ 4]  209 	sub	a, l
-   00F7 DD 7E F9      [19]  210 	ld	a, -7 (ix)
-   00FA 9C            [ 4]  211 	sbc	a, h
-   00FB E2r00r01      [10]  212 	jp	PO, 00148$
-   00FE EE 80         [ 7]  213 	xor	a, #0x80
-   0100                     214 00148$:
-   0100 FAr1Cr01      [10]  215 	jp	M, 00105$
-                            216 ;boot_rom.c:40: numerator += shortest ;
-   0103 78            [ 4]  217 	ld	a, b
-                            218 ;boot_rom.c:41: numerator -= longest ;
-   0104 DD 96 FF      [19]  219 	sub	a, -1 (ix)
-   0107 47            [ 4]  220 	ld	b, a
-                            221 ;boot_rom.c:42: x += dx1;
-   0108 DD 7E 04      [19]  222 	ld	a, 4 (ix)
-   010B DD 86 FB      [19]  223 	add	a, -5 (ix)
-   010E DD 77 04      [19]  224 	ld	4 (ix), a
-                            225 ;boot_rom.c:43: y += dy1;
-   0111 DD 7E 05      [19]  226 	ld	a, 5 (ix)
-   0114 DD 86 FA      [19]  227 	add	a, -6 (ix)
-   0117 DD 77 05      [19]  228 	ld	5 (ix), a
-   011A 18 10         [12]  229 	jr	00109$
-   011C                     230 00105$:
-                            231 ;boot_rom.c:45: numerator += shortest ;
-                            232 ;boot_rom.c:46: x += dx2;
-   011C DD 7E 04      [19]  233 	ld	a, 4 (ix)
-   011F 81            [ 4]  234 	add	a, c
-   0120 DD 77 04      [19]  235 	ld	4 (ix), a
-                            236 ;boot_rom.c:47: y += dy2;
-   0123 DD 7E 05      [19]  237 	ld	a, 5 (ix)
-   0126 DD 86 FC      [19]  238 	add	a, -4 (ix)
-   0129 DD 77 05      [19]  239 	ld	5 (ix), a
-   012C                     240 00109$:
-                            241 ;boot_rom.c:37: for(i=0;i<=longest;i++) {
-   012C DD 34 FD      [23]  242 	inc	-3 (ix)
-   012F DD 7E FF      [19]  243 	ld	a, -1 (ix)
-   0132 DD 96 FD      [19]  244 	sub	a, -3 (ix)
-   0135 30 90         [12]  245 	jr	NC,00108$
-                            246 ;boot_rom.c:50: }
-   0137 DD F9         [10]  247 	ld	sp, ix
-   0139 DD E1         [14]  248 	pop	ix
-   013B C9            [10]  249 	ret
-                            250 ;boot_rom.c:52: void main() {
-                            251 ;	---------------------------------
-                            252 ; Function main
-                            253 ; ---------------------------------
-   013C                     254 _main::
-                            255 ;boot_rom.c:54: unsigned char color = 0;
-   013C 0E 00         [ 7]  256 	ld	c, #0x00
-                            257 ;boot_rom.c:58: for(i=0;i<10;i++)   draw_line(0,0,19,i,color++);
-   013E                     258 00112$:
-   013E 11 00 00      [10]  259 	ld	de, #0x0000
-   0141                     260 00106$:
-   0141 61            [ 4]  261 	ld	h, c
-   0142 0C            [ 4]  262 	inc	c
-   0143 43            [ 4]  263 	ld	b, e
-   0144 C5            [11]  264 	push	bc
-   0145 D5            [11]  265 	push	de
-   0146 E5            [11]  266 	push	hl
-   0147 33            [ 6]  267 	inc	sp
-   0148 C5            [11]  268 	push	bc
-   0149 33            [ 6]  269 	inc	sp
-   014A 3E 13         [ 7]  270 	ld	a, #0x13
-   014C F5            [11]  271 	push	af
-   014D 33            [ 6]  272 	inc	sp
-   014E AF            [ 4]  273 	xor	a, a
-   014F F5            [11]  274 	push	af
-   0150 33            [ 6]  275 	inc	sp
-   0151 AF            [ 4]  276 	xor	a, a
-   0152 F5            [11]  277 	push	af
-   0153 33            [ 6]  278 	inc	sp
-   0154 CDr24r00      [17]  279 	call	_draw_line
-   0157 F1            [10]  280 	pop	af
-   0158 F1            [10]  281 	pop	af
-   0159 33            [ 6]  282 	inc	sp
-   015A D1            [10]  283 	pop	de
-   015B C1            [10]  284 	pop	bc
-   015C 13            [ 6]  285 	inc	de
-   015D 7B            [ 4]  286 	ld	a, e
-   015E D6 0A         [ 7]  287 	sub	a, #0x0a
-   0160 7A            [ 4]  288 	ld	a, d
-   0161 17            [ 4]  289 	rla
-   0162 3F            [ 4]  290 	ccf
-   0163 1F            [ 4]  291 	rra
-   0164 DE 80         [ 7]  292 	sbc	a, #0x80
-   0166 38 D9         [12]  293 	jr	C,00106$
-                            294 ;boot_rom.c:59: for(i=19;i>=0;i--)  draw_line(0,0,i,9,color++);
-   0168 11 13 00      [10]  295 	ld	de, #0x0013
-   016B                     296 00108$:
-   016B 61            [ 4]  297 	ld	h, c
-   016C 0C            [ 4]  298 	inc	c
-   016D 43            [ 4]  299 	ld	b, e
-   016E C5            [11]  300 	push	bc
-   016F D5            [11]  301 	push	de
-   0170 E5            [11]  302 	push	hl
-   0171 33            [ 6]  303 	inc	sp
-   0172 3E 09         [ 7]  304 	ld	a, #0x09
-   0174 F5            [11]  305 	push	af
-   0175 33            [ 6]  306 	inc	sp
-   0176 C5            [11]  307 	push	bc
-   0177 33            [ 6]  308 	inc	sp
-   0178 AF            [ 4]  309 	xor	a, a
-   0179 F5            [11]  310 	push	af
-   017A 33            [ 6]  311 	inc	sp
-   017B AF            [ 4]  312 	xor	a, a
-   017C F5            [11]  313 	push	af
-   017D 33            [ 6]  314 	inc	sp
-   017E CDr24r00      [17]  315 	call	_draw_line
-   0181 F1            [10]  316 	pop	af
-   0182 F1            [10]  317 	pop	af
-   0183 33            [ 6]  318 	inc	sp
-   0184 D1            [10]  319 	pop	de
-   0185 C1            [10]  320 	pop	bc
-   0186 1B            [ 6]  321 	dec	de
-   0187 CB 7A         [ 8]  322 	bit	7, d
-   0189 28 E0         [12]  323 	jr	Z,00108$
-                            324 ;boot_rom.c:61: }
-   018B 18 B1         [12]  325 	jr	00112$
-                            326 	.area _CODE
-                            327 	.area _INITIALIZER
-                            328 	.area _CABS (ABS)
diff --git a/boot_rom.map b/boot_rom.map
deleted file mode 100644
index 011c6d2..0000000
--- a/boot_rom.map
+++ /dev/null
@@ -1,190 +0,0 @@
-ASxxxx Linker V03.00 + NoICE + sdld,  page 1.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-.  .ABS.                            00000000    00000000 =           0. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-     00000000  .__.ABS.                           
-     00000000  l__BSEG                         
-     00000000  l__BSS                          
-     00000000  l__CABS                         
-     00000000  l__DABS                         
-     00000000  l__DATA                         
-     00000000  l__HEADER                       
-     00000000  l__HEAP                         
-     00000000  l__HOME                         
-     00000000  l__INITIALIZED                  
-     00000000  l__INITIALIZER                  
-     00000000  s__CABS                         
-     00000000  s__DABS                         
-     00000000  s__HEADER                       
-     00000000  s__HEADER0                      
-     00000000  s__HEADER1                      
-     00000000  s__HEADER2                      
-     00000000  s__HEADER3                      
-     00000000  s__HEADER4                      
-     00000000  s__HEADER5                      
-     00000000  s__HEADER6                      
-     00000000  s__HEADER7                      
-     00000000  s__HEADER8                      
-     00000001  l__GSFINAL                      
-     00000003  l__HEADER0                      
-     00000003  l__HEADER2                      
-     00000003  l__HEADER3                      
-     00000003  l__HEADER4                      
-     00000003  l__HEADER5                      
-     00000003  l__HEADER6                      
-     00000003  l__HEADER7                      
-     00000004  l__HEADER1                      
-     0000000C  l__HEADER8                      
-     0000000F  l__GSINIT                       
-     000001A3  l__CODE                         
-     00000200  s__CODE                         
-     000003A3  s__GSINIT                       
-     000003A3  s__HOME                         
-     000003A3  s__INITIALIZER                  
-     000003B2  s__GSFINAL                      
-     00008000  s__BSEG                         
-     00008000  s__BSS                          
-     00008000  s__DATA                         
-     00008000  s__HEAP                         
-     00008000  s__INITIALIZED                  
-ASxxxx Linker V03.00 + NoICE + sdld,  page 2.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_CODE                               00000200    000001A3 =         419. bytes (REL,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-     00000200  __clock                            crt0
-     00000204  _exit                              crt0
-     0000020A  _put_pixel                         boot_rom
-     0000022E  _draw_line                         boot_rom
-     00000346  _main                              boot_rom
-     00000397  _abs                               
-ASxxxx Linker V03.00 + NoICE + sdld,  page 3.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER0                            00000000    00000003 =           3. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 4.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER1                            00000000    00000004 =           4. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 5.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER2                            00000000    00000003 =           3. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 6.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER3                            00000000    00000003 =           3. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 7.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER4                            00000000    00000003 =           3. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 8.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER5                            00000000    00000003 =           3. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 9.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER6                            00000000    00000003 =           3. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 10.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER7                            00000000    00000003 =           3. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 11.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_HEADER8                            00000000    0000000C =          12. bytes (ABS,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 12.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_GSINIT                             000003A3    0000000F =          15. bytes (REL,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-     000003A3  gsinit                             crt0
-
-ASxxxx Linker V03.00 + NoICE + sdld,  page 13.
-Hexadecimal  [32-Bits]
-
-Area                                    Addr        Size        Decimal Bytes (Attributes)
---------------------------------        ----        ----        ------- ----- ------------
-_GSFINAL                            000003B2    00000001 =           1. bytes (REL,CON)
-
-      Value  Global                              Global Defined In Module
-      -----  --------------------------------   ------------------------
-ASxxxx Linker V03.00 + NoICE + sdld,  page 14.
-
-Files Linked                              [ module(s) ]
-
-/usr/bin/../share/sdcc/lib/z80/crt0.rel   [ crt0 ]
-boot_rom.rel                              [ boot_rom ]
-
-
-Libraries Linked                          [ object file ]
-
-/usr/bin/../share/sdcc/lib/z80/z80.lib    [ abs.rel ]
-
-ASxxxx Linker V03.00 + NoICE + sdld,  page 15.
-
-User Base Address Definitions
-
-_CODE = 0x0200
-_DATA = 0x8000
-
-
\ No newline at end of file
diff --git a/boot_rom.noi b/boot_rom.noi
deleted file mode 100644
index a6e6667..0000000
--- a/boot_rom.noi
+++ /dev/null
@@ -1,53 +0,0 @@
-DEF .__.ABS. 0x0
-DEF l__BSEG 0x0
-DEF l__BSS 0x0
-DEF l__CABS 0x0
-DEF l__DABS 0x0
-DEF l__DATA 0x0
-DEF l__HEADER 0x0
-DEF l__HEAP 0x0
-DEF l__HOME 0x0
-DEF l__INITIALIZED 0x0
-DEF l__INITIALIZER 0x0
-DEF s__CABS 0x0
-DEF s__DABS 0x0
-DEF s__HEADER 0x0
-DEF s__HEADER0 0x0
-DEF s__HEADER1 0x0
-DEF s__HEADER2 0x0
-DEF s__HEADER3 0x0
-DEF s__HEADER4 0x0
-DEF s__HEADER5 0x0
-DEF s__HEADER6 0x0
-DEF s__HEADER7 0x0
-DEF s__HEADER8 0x0
-DEF l__GSFINAL 0x1
-DEF l__HEADER0 0x3
-DEF l__HEADER2 0x3
-DEF l__HEADER3 0x3
-DEF l__HEADER4 0x3
-DEF l__HEADER5 0x3
-DEF l__HEADER6 0x3
-DEF l__HEADER7 0x3
-DEF l__HEADER1 0x4
-DEF l__HEADER8 0xC
-DEF l__GSINIT 0xF
-DEF l__CODE 0x1A3
-DEF s__CODE 0x200
-DEF s__GSINIT 0x3A3
-DEF s__HOME 0x3A3
-DEF s__INITIALIZER 0x3A3
-DEF s__GSFINAL 0x3B2
-DEF s__BSEG 0x8000
-DEF s__BSS 0x8000
-DEF s__DATA 0x8000
-DEF s__HEAP 0x8000
-DEF s__INITIALIZED 0x8000
-DEF __clock 0x200
-DEF _exit 0x204
-DEF _put_pixel 0x20A
-DEF _draw_line 0x22E
-DEF _main 0x346
-DEF _abs 0x397
-DEF gsinit 0x3A3
-LOAD boot_rom.ihx
diff --git a/boot_rom.rel b/boot_rom.rel
deleted file mode 100644
index a3d1e67..0000000
--- a/boot_rom.rel
+++ /dev/null
@@ -1,128 +0,0 @@
-XL2
-H 9 areas 5 global symbols
-M boot_rom
-O -mz80
-S _abs Ref0000
-S .__.ABS. Def0000
-A _CODE size 18D flags 0 addr 0
-S _main Def013C
-S _draw_line Def0024
-S _put_pixel Def0000
-A _DATA size 0 flags 0 addr 0
-A _INITIALIZED size 0 flags 0 addr 0
-A _DABS size 0 flags 8 addr 0
-A _HOME size 0 flags 0 addr 0
-A _GSINIT size 0 flags 0 addr 0
-A _GSFINAL size 0 flags 0 addr 0
-A _INITIALIZER size 0 flags 0 addr 0
-A _CABS size 0 flags 8 addr 0
-T 00 00
-R 00 00 00 00
-T 00 00 DD E5 DD 21 00 00 DD 39 DD 4E 05 06 00 69
-R 00 00 00 00
-T 0E 00 60 29 29 09 29 29 29 29 29 DD 4E 04 06 00
-R 00 00 00 00
-T 1C 00 09 DD 7E 06 77 DD E1 C9
-R 00 00 00 00
-T 24 00
-R 00 00 00 00
-T 24 00 DD E5 DD 21 00 00 DD 39 21 F8 FF 39 F9 DD
-R 00 00 00 00
-T 32 00 7E 04 DD 96 06 30 05 01 01 00 18 03
-R 00 00 00 00
-T 3E 00
-R 00 00 00 00
-T 3E 00 01 FF FF
-R 00 00 00 00
-T 41 00
-R 00 00 00 00
-T 41 00 DD 71 FB DD 7E 05 DD 96 07 30 05 01 01 00
-R 00 00 00 00
-T 4F 00 18 03
-R 00 00 00 00
-T 51 00
-R 00 00 00 00
-T 51 00 01 FF FF
-R 00 00 00 00
-T 54 00
-R 00 00 00 00
-T 54 00 DD 71 FA DD 4E 06 06 00 DD 5E 04 16 00 79
-R 00 00 00 00
-T 62 00 93 4F 78 9A 47 C5 CD 00 00 F1 DD 75 FF DD
-R 00 00 00 00 02 09 00 00
-T 70 00 6E 07 26 00 DD 5E 05 16 00 BF ED 52 E5 E5
-R 00 00 00 00
-T 7E 00 CD 00 00 F1 5D E1 DD 73 FE DD 7E FF DD 96
-R 00 00 00 00 02 03 00 00
-T 8C 00 FE 30 1A E5 CD 00 00 F1 DD 75 FF C5 CD
-R 00 00 00 00 02 07 00 00
-T 99 00 00 00 F1 DD 75 FE 0E 00 DD 7E FA DD 77 FC
-R 00 00 00 00 02 02 00 00
-T A7 00 18 07
-R 00 00 00 00
-T A9 00
-R 00 00 00 00
-T A9 00 DD 4E FB DD 36 FC 00
-R 00 00 00 00
-T B0 00
-R 00 00 00 00
-T B0 00 DD 5E FF 16 00 6B 62 CB 7A 28 03 6B 62 23
-R 00 00 00 00
-T BE 00
-R 00 00 00 00
-T BE 00 CB 2C CB 1D 45 DD 36 FD 00
-R 00 00 00 00
-T C7 00
-R 00 00 00 00
-T C7 00 C5 D5 DD 66 08 DD 6E 05 E5 DD 7E 04 F5 33
-R 00 00 00 00
-T D5 00 CD 00 00 F1 33 D1 C1 DD 6E FE 26 00 7B 95
-R 00 00 00 00 00 03 00 00
-T E3 00 6F 7A 9C 67 DD 70 F8 DD 36 F9 00 78 DD 86
-R 00 00 00 00
-T F1 00 FE 47 DD 7E F8 95 DD 7E F9 9C E2 00 01 EE
-R 00 00 00 00 00 0D 00 00
-T FF 00 80
-R 00 00 00 00
-T 00 01
-R 00 00 00 00
-T 00 01 FA 1C 01 78 DD 96 FF 47 DD 7E 04 DD 86 FB
-R 00 00 00 00 00 03 00 00
-T 0E 01 DD 77 04 DD 7E 05 DD 86 FA DD 77 05 18 10
-R 00 00 00 00
-T 1C 01
-R 00 00 00 00
-T 1C 01 DD 7E 04 81 DD 77 04 DD 7E 05 DD 86 FC DD
-R 00 00 00 00
-T 2A 01 77 05
-R 00 00 00 00
-T 2C 01
-R 00 00 00 00
-T 2C 01 DD 34 FD DD 7E FF DD 96 FD 30 90 DD F9 DD
-R 00 00 00 00
-T 3A 01 E1 C9
-R 00 00 00 00
-T 3C 01
-R 00 00 00 00
-T 3C 01 0E 00
-R 00 00 00 00
-T 3E 01
-R 00 00 00 00
-T 3E 01 11 00 00
-R 00 00 00 00
-T 41 01
-R 00 00 00 00
-T 41 01 61 0C 43 C5 D5 E5 33 C5 33 3E 13 F5 33 AF
-R 00 00 00 00
-T 4F 01 F5 33 AF F5 33 CD 24 00 F1 F1 33 D1 C1 13
-R 00 00 00 00 00 08 00 00
-T 5D 01 7B D6 0A 7A 17 3F 1F DE 80 38 D9 11 13 00
-R 00 00 00 00
-T 6B 01
-R 00 00 00 00
-T 6B 01 61 0C 43 C5 D5 E5 33 3E 09 F5 33 C5 33 AF
-R 00 00 00 00
-T 79 01 F5 33 AF F5 33 CD 24 00 F1 F1 33 D1 C1 1B
-R 00 00 00 00 00 08 00 00
-T 87 01 CB 7A 28 E0 18 B1
-R 00 00 00 00
diff --git a/boot_rom.sym b/boot_rom.sym
deleted file mode 100644
index 119639c..0000000
--- a/boot_rom.sym
+++ /dev/null
@@ -1,30 +0,0 @@
-ASxxxx Assembler V02.00 + NoICE + SDCC mods  (Zilog Z80 / Hitachi HD64180 / ZX-Next), page 1.
-Hexadecimal [16-Bits]
-
-Symbol Table
-
-    .__.$$$.                                                    =  2710 L
-    .__.ABS.                                                    =  0000 G
-    .__.CPU.                                                    =  0000 L
-    .__.H$L.                                                    =  0000 L
-    _abs                                                           **** GX
-  0 _draw_line                                                     0024 GR
-  0 _main                                                          013C GR
-  0 _put_pixel                                                     0000 GR
-
-
-ASxxxx Assembler V02.00 + NoICE + SDCC mods  (Zilog Z80 / Hitachi HD64180 / ZX-Next), page 2.
-Hexadecimal [16-Bits]
-
-Area Table
-
-   0 _CODE                                      size  18D   flags    0
-   1 _DATA                                      size    0   flags    0
-   2 _INITIALIZED                               size    0   flags    0
-   3 _DABS                                      size    0   flags    8
-   4 _HOME                                      size    0   flags    0
-   5 _GSINIT                                    size    0   flags    0
-   6 _GSFINAL                                   size    0   flags    0
-   7 _INITIALIZER                               size    0   flags    0
-   8 _CABS                                      size    0   flags    8
-